In all the old school blind tests, wide dispersion is preferred over narrow dispersion speakers all else being essentially equal.Thank you so much for the quick and very informative response. I will think about that.
I was a bit confused. In Erin's review and top list the C6B is the best and game changing for it's price. But in another video, the Sierra was prefered over the C6B and other speakers:
I guess they are pretty similar and in the end it comes down to personal preferences. So I might have to listen to them for myself.